齿轮计量泵在液压控制技术中的应用及发展现状
齿轮计量泵作为工业中的重要设备，在液压传动和控制技术中占有很大的比重。varem齿轮计量泵的主要特点是：结构简单、体积小、重量轻、自吸性好、耐污染、使用可靠、寿命长、制造方便、维护方便、价格低廉。但渐开线齿轮计量泵也存在流量和困油引起的压力脉动大、噪声大、排量不可调、高温效率低等缺点。这些缺点在一些结构改进的齿轮计量泵上得到了很大的改善。近年来，varem齿轮泵的工作压力有了很大的提高，额定压力可达25MPa，Z高压可达31.5Mpa。另外，产品结构上也有很多改进，特别是varem三、四级齿轮泵的出现，在一定程度上弥补了齿轮泵不能可变的缺陷，而斜齿轮计量泵使介质的排量比更耐磨，复合齿轮泵的出现使泵的性能更优齿轮泵的流量均匀性大大提高。它的应用领域也在不断扩大，许多液压设备已由原来的柱塞泵改为齿轮泵。由于市场竞争激烈，利润呈现出被挤压的形式。如何调整产业生态，让占GDP比重过半的民营企业发挥应有的活力，成为一个重要课题。而且，人才问题也是一个共同的话题。高端人才和技术蓝领的缺乏几乎成了整个装备制造业的难题。虽然机械类专业呈现出良好的招生和布局状态，但与齿轮计量泵行业发展的人才缺口相比仍有较大差距。随着齿轮计量泵向虚拟化、网络化、智能化方向发展，将出现越来越多的交叉学科，这将对我国现有的行业人才培养模式形成巨大挑战。最后是管理。这是一个普遍的概念。我们主要讨论公司的管理制度。这并不是齿轮计量泵企业有的缺陷，民营企业或多或少存在着管理上的弊端。然而，作为一家高新技术企业，齿轮计量泵行业对管理者有着很高的要求。但是，我们可以看到，企业主大多是销售人员，或技术人员等半途而废的僧侣，缺乏企业管理意识。也有不少企业通过引进高级管理人才来弥补，有条件的企业选择上市来对抗企业管理的现代化。很难确定哪种模式有效，但短期内解决管理问题的可能性很小。齿轮计量泵行业的发展可以说是机遇与挑战并存。只有对症下药，乘势而上，以市场为导向，抓住机遇，迎接挑战，齿轮计量泵相关企业才能在激烈的竞争环境中占据一席之地。

As an important equipment in industry, gear metering pump occupies a large proportion in hydraulic transmission and control technology. The main features of varem gear metering pump are: simple structure, small volume, light weight, good self-priming, pollution resistance, reliable use, long service life, convenient manufacture, convenient maintenance and low price. But the involute gear metering pump also has some disadvantages, such as large pressure pulsation caused by flow and trapped oil, large noise, non adjustable displacement, low high temperature efficiency and so on. These shortcomings have been greatly improved in some gear metering pumps with improved structure. In recent years, the working pressure of varem gear pump has been greatly improved, the rated pressure can reach 25MPa, Z high pressure can reach 31.5Mpa. In addition, there are many improvements in the product structure, especially the appearance of varem three-stage and four stage gear pump, which makes up for the defect that the gear pump can not be changed to a certain extent, while the helical gear metering pump makes the displacement ratio of medium more wear-resistant, the appearance of compound gear pump makes the performance of the pump better, and the flow uniformity of the gear pump is greatly improved. Its application field is also expanding, many hydraulic equipment has been changed from the original piston pump to gear pump. Due to the fierce competition in the market, the profit is squeezed. How to adjust the industrial ecology and let the private enterprises, which account for more than half of GDP, play their due vitality, has become an important issue. Moreover, the issue of talents is also a common topic. The lack of high-end talents and technical blue collar has almost become a problem for the whole equipment manufacturing industry. Although the mechanical specialty presents a good enrollment and layout, there is still a big gap compared with the talent gap of gear metering pump industry. With the development of gear metering pump in the direction of virtualization, networking and intelligence, there will be more and more interdisciplinary, which will pose a great challenge to the existing industry talent training mode in China. Finally, management. This is a universal concept. We mainly discuss the management system of the company. This is not the defect of gear metering pump enterprises, private enterprises have more or less management shortcomings. However, as a high-tech enterprise, gear metering pump industry has high requirements for managers. However, we can see that most of the business owners are monks who give up halfway, such as salesmen or technicians, and lack the awareness of enterprise management. There are also many enterprises to make up for it by introducing senior management talents. Conditional enterprises choose to go public to fight against the modernization of enterprise management. It is difficult to determine which model is effective, but the possibility of solving management problems in the short term is very small. The development of gear metering pump industry can be said that opportunities and challenges coexist. Only by taking advantage of the situation, taking the market as the guide, seizing the opportunity and meeting the challenge, can the gear metering pump related enterprises occupy a place in the fierce competition environment.